JPH0639219Y2 - Liquid fuel vaporization burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vaporizing burner for a liquid fuel combustion apparatus.

[Prior Art] In recent years, in a home heater that burns oil and uses the heat of combustion, there is a burner that can adjust the amount of combustion over a wide range from low calorie to high calorie due to improved usability and comfort. Is required.

For this reason, a flame-holding wire mesh is attached so as to cover the flame holes in the burner head portion, and the flame-holding wire mesh is burned on the surface thereof.

Hereinafter, a burner of a conventional liquid fuel combustion device will be described with reference to the drawings.

FIG. 3 is a half sectional view of a burner portion of a conventional liquid fuel combustion apparatus, FIG. 4 is a half sectional view of a burner head portion thereof, FIG. 5 is a detailed view of a flame holding wire mesh weld portion thereof, and FIG. [Fig. 3] is a perspective view of a flame holding wire mesh.

In FIG. 3, 1 is a vaporizer, 2 is a heater for preheating, and 3 is.
Is a needle for supplying fuel, 4 is a nozzle for supplying combustion air, 5 is a burner head receiving portion, 6 is punching metal, 7 is a burner head, and 8 and 9 are provided along inner and outer wall surfaces of the burner head 7. Flame retaining wire mesh, 10 flame retaining ring, 11
Is a spark plug for ignition, 12 is a flame hole, and 13 is a spot weld.

The vaporization cylinder 1 is preheated by the heater 2, and after the preheating is completed, fuel such as kerosene is jetted into the vaporization cylinder 1 through the needle 3 and vaporized.

On the other hand, the combustion air enters the vaporizing cylinder 1 through the nozzle 4 and premixes with the vaporized kerosene. The premixed kerosene gas passes through the cylindrical burner head receiving portion 5, is rectified by the punching metal 6 having fine holes, and further passes through the flame holding wire net 8 attached to the inner side wall surface of the burner head 7, and the burner From the flame holes 12 of the head 7 to the flame retaining wire net 9 on the outer wall surface of the burner head 7.

The kerosene gas that has passed through the flame retaining wire net 9 is accumulated by the flame retaining ring 10 and ignited by the spark from the spark plug 11 to form a flame.

FIG. 4 is a detailed view of the burner head 7 section, in which a plurality of flame holes 12 are provided in two rows in the upper and lower direction at a distance of d dimension.
Further, cylindrical flame-holding wire nets 8 and 9 are inserted into the inner and outer wall surfaces, and the outer flame-holding wire mesh 9 is spot-welded in the middle thereof as shown in FIG.

The flame-holding wire mesh 9 on the outer side was attached in the following procedure.

That is, as shown in FIG. 6, the wire mesh is cut in advance to an appropriate size, and both ends thereof are welded to form a ring shape, which is then press-fitted onto the outer wall surface of the burner head 7 and spot welded 13.

[Problems to be solved by the device]

In the conventional burner head, the flame holes 12 are formed in upper and lower two rows, and even if the flame holding wire net 9 is welded in the middle, the welded portion 13 is separated from the flame.

Therefore, at the time of low-calorie weak combustion, the flame approaches the surface of the flame-preserving wire net 9 and its temperature rises, the heat does not easily escape to the burner head 7, and the flame-preserving wire net 9 becomes red and the flame-preserving wire net 9 is deformed. However, there is a problem in that it causes deterioration and causes deterioration in characteristics and life.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a liquid fuel vaporization type burner capable of reducing the temperature of a flame-holding wire mesh even during weak combustion with low calories.

[Means for Solving the Problems]

According to the present invention, a liquid fuel is provided in which a plurality of flame holes are formed on a side wall surface of a cylindrical burner head forming a combustion portion, and the flame holes are covered with a flame retaining wire mesh welded and fixed to an outer peripheral surface of the burner head side wall. In the vaporization type burner, the flame holes are arranged in two rows in the upper and lower rows, and partly wrapped in the height direction so that the upper edge portion of the lower row flame holes is higher than the lower edge portion of the upper row flame holes. The flame-holding wire mesh is welded and fixed to the side wall surface of the burner head at an intermediate point between adjacent upper and lower row flame holes.

[Action]

In the burner of the present invention, since the weld portion is close to the flame, the heat of the flame-holding wire mesh easily escapes to the burner head, and the temperature rise of the flame-holding wire mesh during weak combustion is suppressed.

〔Example〕

Embodiments of the present invention will be described below. In FIG. 1, 7 is a burner head, 12 is a flame hole formed in upper and lower two rows and formed of a perfect circle or a circle close to a perfect circle, 9 is an outer flame retaining wire mesh, and 13 is a spot welding spot.

Here, the upper and lower two rows of flame holes 12 of the burner head 7 are provided in a zigzag pattern in which the flame holes 12 that are in contact with each other partially overlap each other in the vertical direction (the d dimension is negative).

As in the conventional case, the flame-holding wire mesh 9 is cut into appropriate dimensions in advance, and its both ends are welded into a ring shape, press-fitted into the outer wall surface of the burner head 7, and spot-welded.

The welded portion 13 is located at the midpoint between the upper and lower two rows of flame holes 12 and is positioned so as not to cover the flame holes 12 of the burner head 7.

Further, as shown in FIG. 2, there is only one welding point 13 at the midpoint between the upper and lower flame holes 12, 12, which is very close to the flame hole 12 of the burner head 7. It is in.

As described above, the burner head 12 has a flame hole 12 that is intimately aligned with each other.
The comrades are in a relationship of being partially overlapped with each other, and are staggered, and the welded portion 13 of the flame retaining wire net 9 is at the midpoint of the flame holes 12 which are vertically aligned with each other. Since it is located very close to the burner head 7, the heat of the flame holding wire net 9 can easily escape to the burner head 7.

Further, the flame-retardant wire net 9 and the outer wall surface of the burner head 7 have good adhesion, and the swelling of the flame-retardant wire net 9 can be prevented.

Further, since the flame holes 12 of the burner head 7 are formed as perfect circles or circular holes close to perfect circles, the heat of the flame retaining wire net 9 facing the flame holes 12 can be uniformly dissipated to the surroundings, and flame retaining Wire net 9
The deformation of can be minimized.

Especially when the combustion is low and the calories are low, the flame is
However, since the heat easily escapes to the burner head 7, the temperature rise of the flame-holding wire net 9 is significantly suppressed in the flame-holding wire net 9 because the heat easily escapes to the burner head 7. Deterioration can be reduced.

[Effect of device]

As described above, according to the present invention, the flame holes are arranged in upper and lower two rows with respect to the side wall surface of the burner head, and the upper edge portions of the lower row flame holes are arranged more than the lower edge portions of the upper row flame holes. Since they are arranged in a zigzag pattern that partially wraps in the height direction so that they are in the upper position, the flame-holding wire mesh is welded and fixed to the side wall surface of the burner head at the midpoint between the flame holes in the upper row and the flame holes in the lower row that are in line with each other. Further, there is an effect that the temperature rise of the flame-holding wire mesh can be prevented even at the time of low-calorie weak combustion, the flame-holding wire mesh is not deformed and deteriorated, and a reliable and long-life liquid fuel vaporization burner can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a half sectional view of a burner head portion showing an embodiment of the present invention, FIG. 2 is a detailed view of a welded portion of a flame holding wire mesh, and FIG.
The figure is a half cross-sectional view of the burner portion of a conventional liquid fuel combustion device,
FIG. 4 is a half cross-sectional view of a conventional burner head portion, FIG. 5 is a detailed view of a welded portion of the flame-holding wire mesh, and FIG. 6 is a perspective view of the flame-holding wire mesh. In the figure, 1 is a vaporization cylinder, 7 is a burner head, 8 and 9 are flame-holding wire nets, 12 is a flame hole, and 13 is a welding point. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] 1. A liquid in which a plurality of flame holes are formed on a side wall surface of a cylindrical burner head forming a combustion section, and the flame holes are covered with a flame retaining wire mesh welded and fixed to an outer peripheral surface of the burner head side wall. In the fuel vaporization burner, the flame holes are arranged in upper and lower two rows, and partly in the height direction so that the upper edge portion of the lower row flame holes is higher than the lower edge portion of the upper row flame holes. A liquid fuel vaporization type burner, which is arranged in a zigzag pattern and is welded and fixed to a side wall surface of a burner head at a midpoint between adjacent upper and lower row flame holes.